However, your life would be very different if you lived in ancient Rome. If you were an average Roman citizen, you wouldn’t be able to read or write. You’d eat mostly porridge, olives and lentils. You wouldn’t travel more than 50 miles from home in your lifetime--a span of only about 35 years.

Despite those facts, you, like all Romans, would still want to keep your teeth shiny and healthy. Here’s how you’d do it:

With help from Delta Dental of Washington, we’ve searched high and low to find some of the most impressive smiles in the animal kingdom. Here’s what we found:

Smallest Smile—The mammal with the smallest smile is Kitti’s hog-nosed bat, pictured above. They’re nicknamed the bumblebee bat because they’re not much bigger than a bumblebee. They’re a little over an inch long, have reddish-brown coats, and a pig-like snout. They live in large colonies and eat tiny insects.

Keep reading to learn which animal has a smile big enough to park your car in and for tips on maintaining a healthy smile.